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Numerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluids

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dc.citedby0
dc.contributor.authorAl-Aswadi A.A.en_US
dc.contributor.authorMohammed H.A.en_US
dc.contributor.authorShuaib N.H.en_US
dc.contributor.authorid36241331700en_US
dc.contributor.authorid15837504600en_US
dc.contributor.authorid13907934500en_US
dc.date.accessioned2023-12-29T07:49:33Z
dc.date.available2023-12-29T07:49:33Z
dc.date.issued2010
dc.description.abstractLaminar mixed convective buoyancy assisting flow through a two-dimensional vertical duct with a backward-facing step using nanofluids as a medium is numerically simulated using finite volume technique. Different types of nanoparticles with 5% volume fraction are used. The wall downstream of the step was maintained at a uniform wall temperature, while the straight wall that forms the other side of the duct was maintained at constant temperature equivalent to the inlet fluid temperature. The wall upstream of the step and the backward-facing step were considered as adiabatic surfaces. The duct has a step height of 4.9 mm and an expansion ratio of 1.942, while the total length in the downstream of the step is 0.5 m. The Reynolds number was in the range of 0 ? Re ? 100. The downstream wall was fixed to be at uniform wall temperature of 20 �C higher than the inlet flow temperature. A recirculation region was developed straight behind the backward facing step which was appeared between the edge of the step and few millimeters before the corner which connect the step and the downstream wall. In the few millimeters gap a U-turn flow was developed opposite to the recirculation flow which mixed with the unrecirculated flow and travels along the channel. It is inferred that diamond nanofluid has the highest velocity in the vicinity to the heated wall. Copyright � 2010 by ASME.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1115/IMECE2010-38152
dc.identifier.epage1463
dc.identifier.issuePARTS A AND B
dc.identifier.scopus2-s2.0-84881440921
dc.identifier.spage1453
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84881440921&doi=10.1115%2fIMECE2010-38152&partnerID=40&md5=59a5c447e6510189722c8b0d5fed04b9
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30566
dc.identifier.volume7
dc.pagecount10
dc.sourceScopus
dc.sourcetitleASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
dc.subjectMechanical engineering
dc.subjectNanofluidics
dc.subjectReynolds number
dc.subjectBackward facing step
dc.subjectConstant temperature
dc.subjectFinite volume technique
dc.subjectMixed convective flow
dc.subjectNumerical investigations
dc.subjectRe-circulation flow
dc.subjectRecirculation regions
dc.subjectUniform wall temperatures
dc.subjectDucts
dc.titleNumerical investigation of mixed convective flow through a vertical duct with a backward-facing step using nanofluidsen_US
dc.typeConference paperen_US
dspace.entity.typePublication
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